2008 Infiniti QX56 vs. 2010 Audi S5
To start off, 2010 Audi S5 is newer by 2 year(s). Which means there will be less support and parts availability for 2008 Infiniti QX56. In addition, the cost of maintenance, including insurance, on 2008 Infiniti QX56 would be higher. At 5,550 cc (8 cylinders), 2008 Infiniti QX56 is equipped with a bigger engine. In terms of performance, 2010 Audi S5 (354 HP @ 7000 RPM) has 34 more horse power than 2008 Infiniti QX56. (320 HP @ 5200 RPM) In normal driving conditions, 2010 Audi S5 should accelerate faster than 2008 Infiniti QX56. With that said, vehicle weight also plays an important factor in acceleration. 2010 Audi S5 weights approximately 430 kg more than 2008 Infiniti QX56. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2008 Infiniti QX56 (533 Nm @ 3400 RPM) has 93 more torque (in Nm) than 2010 Audi S5. (440 Nm @ 3500 RPM). This means 2008 Infiniti QX56 will have an easier job in driving up hills or pulling heavy equipment than 2010 Audi S5. 2008 Infiniti QX56 has automatic transmission and 2010 Audi S5 has manual transmission. 2010 Audi S5 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2008 Infiniti QX56 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2008 Infiniti QX56 | 2010 Audi S5 | |
| Make | Infiniti | Audi |
| Model | QX56 | S5 |
| Year Released | 2008 | 2010 |
| Body Type | SUV | Coupe |
| Engine Position | Front | Front |
| Engine Size | 5550 cc | 4200 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 320 HP | 354 HP |
| Engine RPM | 5200 RPM | 7000 RPM |
| Torque | 533 Nm | 440 Nm |
| Torque RPM | 3400 RPM | 3500 RPM |
| Drive Type | 4WD | AWD |
| Transmission Type | Automatic | Manual |
| Number of Seats | 7 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1320 kg | 1750 kg |
| Vehicle Length | 5260 mm | 4636 mm |
| Vehicle Width | 2030 mm | 1854 mm |
| Vehicle Height | 1960 mm | 1369 mm |
| Wheelbase Size | 3140 mm | 2751 mm |
| Fuel Consumption Highway | 13.1 L/100km | 10.7 L/100km |
| Fuel Consumption City | 19.6 L/100km | 16.8 L/100km |
| Fuel Tank Capacity | 106 L | 63 L |
